Mach III Clutch 98BK & 98BK-ULOW - Manual (Page 3)

7/10/2013 BRAKES_SENSIFLEX_BK_MANUAL Page 3 of 5
Installation (Continued)
B. AIR LINE CONNECTION
Air supply should be both filtered and regulated. Contamination in the air supply will cause
damage to the brake, particularly to the diaphragm actuator. Connect a flexible air line to the
air inlet using a thread sealing compound. Do not use rigid piping. Cycle the brake with
the machine off to assure engagement and release.
II. Operation
Torque (stopping force) is proportional to air pressure. SensiFlex® brakes are designed for use
in slip applications, typically to maintain tension on a web during unwinding or other tension
control applications. Mach III Clutch, Inc. should always be consulted to assist with selection of
a SensiFlex® Brake to assure that required tension can be maintained while dissipating the
heat caused by constant slip.
III. Routine Maintenance
Friction discs are a “wear” item and in a constant slip application, periodic replacement of the
friction disc will be necessary. The frequency of disc replacement varies with each application.
S crews are used to mount the friction disc on the piston. Wear on the friction disc should be
monitored so that it can be replaced prior to the point at which the heads of the mounting
screws would make contact with the face of the drive disc. See following chart for
replacement point recommendations.
Friction Disc Replacement Recommendations
Product
Original Thickness
of Friction Disc
Replace When Worn To A
Thickness of
38BK/38BK-ULOW 3/16 Inch 9/64 Inch
58BK/58BK-ULOW 1/4 Inch 1/8 Inch
78BK/78BK-ULOW 5/16 Inch 3/16 Inch
98BK/98BK-ULOW 7/16 Inch 5/16 Inch
Repair Parts & Services
Kits Available Contents Part Numbers
Facing Kit Friction Disc & Mounting Screws 38BK-FCGK, 38BK-ULOW-FCGK,
58BK-FCGK, Etc.
Repair Kit Friction Disc, Mounting Screws,
Spring(s), Diaphragm 38BK-RPRK, 38BK-ULOW-RPRK,
58BK-RPRK, Etc.
For parts not included in the kits, please contact Mach III Clutch, Inc. or your distributor.
Factory repair is also available. A return materials authorization (RMA) number must be
obtained prior to sending any unit in for repair. Mach III Clutch is not responsible for products
returned without authorization.